3-Oxazolidineethanesulfonic acid, 5-(2-(3-ethyl-2(3H)-benzothiazolylidene)-1-methylethylidene)-4-oxo-2-thioxo- 5-(2-(3-Ethyl-2-benzothiazolinylidene)-1-methylethylidene)-3-(2-sulfoethyl)-2-thioxo-4-oxazolidinone 97135-96-1